Occupancy Sensors
Occupancy and vacancy sensors switch lighting based on whether a space is in use, cutting wasted energy and helping meet energy codes. Sensors use PIR, ultrasonic, or dual-technology detection and come in ceiling, wall-switch, and fixture-mount styles. Rock Lighting & Electric stocks occupancy and vacancy sensors from Wattstopper, Lutron, Leviton, and...
Lighting Controls
Dimmers and Switches
Smart Controls
Daylight and Occupancy Sensors
Wall Plates and Accessories
Fixture Controls
Cylinders
Frequently Asked Questions
What is the difference between an occupancy and a vacancy sensor?
An occupancy sensor turns lights on automatically when it detects someone and off after the space is empty. A vacancy sensor requires a person to switch the lights on manually but turns them off automatically when the space is vacated. Vacancy (manual-on) sensing maximizes energy savings and is required for some space types under energy code.
What is the difference between PIR, ultrasonic, and dual-technology sensors?
PIR (passive infrared) detects heat-and-motion within line of sight and resists false triggers. Ultrasonic detects motion via sound-wave reflections and sees around obstructions, good for restrooms and partitioned spaces. Dual-technology combines both to reduce false on/off events.
Are occupancy sensors required by Title 24?
In most commercial spaces, California's Title 24 requires automatic shut-off via occupancy or vacancy sensing, with vacancy (manual-on) control mandated for certain room types. Exact requirements and control-zone limits vary by code cycle, so confirm current rules with your local authority having jurisdiction.
Where should occupancy sensors be used?
Common locations are offices, conference rooms, restrooms, hallways, storage and break rooms, and classrooms. Match the sensor technology and coverage pattern to the room: PIR for open line-of-sight areas, ultrasonic or dual-tech for restrooms and spaces with partitions.